11516381228 has 12 divisors (see below), whose sum is σ = 21985818792. Its totient is φ = 5234718720.

The previous prime is 11516381207. The next prime is 11516381237. The reversal of 11516381228 is 82218361511.

It is a junction number, because it is equal to n+sod(n) for n = 11516381191 and 11516381200.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130867925 + ... + 130868012.

It is an arithmetic number, because the mean of its divisors is an integer number (1832151566).

Almost surely, 2^11516381228 is an apocalyptic number.

It is an amenable number.

11516381228 is a deficient number, since it is larger than the sum of its proper divisors (10469437564).

11516381228 is a wasteful number, since it uses less digits than its factorization.

11516381228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261735952 (or 261735950 counting only the distinct ones).

The product of its digits is 23040, while the sum is 38.

The spelling of 11516381228 in words is "eleven billion, five hundred sixteen million, three hundred eighty-one thousand, two hundred twenty-eight".